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Financial Statement Schedule I - STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating activities: |  |  |
Net income | $ 242,431 | $ 102,983 | $ 65,275
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 129,256 | 99,273 | 95,849
Impairment loss of investment | 5,738 | 3,686 | 0
(Gain) loss on change in fair value of derivatives | 19,230 | 272 | (27,322)
Gain on repurchase of convertible notes |  |  | (2,782)
Allowance for doubtful accounts | 2,812 | 7,265 | (280)
Equity in loss (earnings) of unconsolidated investees | (5,908) | (9,411) | 4,404
Share-based compensation | 10,258 | 9,314 | 7,757
Changes in operating assets and liabilities: |  |  |
Inventories | 55,408 | (49,024) | (50,557)
Accounts receivable trade | (179,607) | 46,337 | (33,060)
Amounts due from related parties | 9,237 | (10,089) | (4,230)
Advances to suppliers | 29,001 | (15,990) | (30,609)
Prepaid expenses and other current assets | (2,208) | (49,813) | (135,426)
Other non-current assets | 9,387 | (23,795) | (1,308)
Accounts payable | 47,756 | (27,758) | 61,157
Advances from customers | (11,225) | (44,985) | 19,710
Amounts due to related parties | 10,467 | 33,908 | (43,774)
Accrued warranty costs | (3,563) | (6,726) | (3,847)
Other liabilities | (29,691) | (18,774) | (995)
Liability for uncertain tax positions | 10,863 | 833 | (6,037)
Deferred taxes | 37,591 | 84,939 | (95,629)
Net settlement of derivatives | 28,731 | (1,460) | (1,922)
Net cash provided by (used in) operating activities | 216,280 | 203,920 | (278,073)
Investing activities: |  |  |
Investment in subsidiaries | (11,036) | (92,925) | (124,737)
Purchase of property, plant and equipment | (316,282) | (276,978) | (286,722)
Net cash used in investing activities | 29,071 | (239,230) | (1,093,142)
Financing activities: |  |  |
Repayment of short-term borrowings | (2,368,967) | (2,068,069) | (2,243,003)
Proceeds from issuance of common shares |  |  | 23,864
Issuance costs paid for common shares offering |  |  | (456)
Payments for repurchase of convertible notes |  |  | (19,667)
Proceeds from exercise of stock options | 769 | 879 | 707
Net cash provided by(used in) financing activities | (463,613) | 165,283 | 1,299,823
Effect of exchange rate changes | (38,725) | 51,342 | (46,629)
Net increase (decrease) in cash, cash equivalents and restricted cash | (256,987) | 181,315 | (118,021)
Cash, cash equivalents and restricted cash at the beginning of the year | 1,190,134 | 1,007,700 | 1,134,683
Cash, cash equivalents and restricted cash at the end of the year | 940,990 | 1,190,134 | 1,007,700
Supplemental disclosure of cash flow information: |  |  |
Interest paid (net of amounts capitalized) | 103,236 | 113,513 | 70,827
Income taxes paid | 32,135 | 45,483 | 187,876
Parent Company |  |  |
Operating activities: |  |  |
Net income | 237,070 | 99,572 | 65,249
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 21 | 33 | 32
Loss on disposal of subsidiaries |  | 9,559 |
Impairment loss of investment |  | 3,686 |
(Gain) loss on change in fair value of derivatives | 2,671 | 7,134 | (30,988)
Gain on repurchase of convertible notes |  |  | (2,782)
Allowance for doubtful accounts | (212) | 2,666 | (844)
Equity in earnings of subsidiaries | (195,950) | (130,048) | (43,596)
Equity in loss (earnings) of unconsolidated investees |  | 127 | (50)
Share-based compensation | 10,259 | 9,314 | 7,757
Changes in operating assets and liabilities: |  |  |
Inventories |  |  | 146
Accounts receivable trade | (5,089) | (6,739) | 3,010
Amounts due from related parties | (184,755) | 57,539 | 21,731
Advances to suppliers | 60 | (60) | 226
Prepaid expenses and other current assets | (2,749) | (5,715) | 6,955
Other non-current assets | (149) | 1,016 | (2,039)
Accounts payable | 3,900 |  | (4)
Advances from customers |  | (1,069) | (1,413)
Amounts due to related parties | 15,674 | 66,038 | (129,307)
Accrued warranty costs | (76) | (10,639) | (12,381)
Other liabilities | (25,958) | 23,505 | (297)
Liability for uncertain tax positions | 6,008 | 833 | (7,413)
Deferred taxes | 9,230 | (6,106) | 199
Net settlement of derivatives | 21,450 | (6,358) | 17,043
Net cash provided by (used in) operating activities | (108,595) | 114,288 | (108,766)
Investing activities: |  |  |
Investment in subsidiaries | (1,051) | (64,185) |
Proceeds from disposal of subsidiaries |  | 61,749 |
Purchase of property, plant and equipment |  | (26) |
Funding of loans to subsidiaries | (94,000) | (74,458) |
Repayment of loans from subsidiaries | 375,635 |  | 299,578
Net cash used in investing activities | 280,584 | (76,920) | 299,578
Financing activities: |  |  |
Repayment of short-term borrowings | (151,000) | (49,000) | (190,000)
Proceeds from issuance of common shares |  |  | 23,864
Issuance costs paid for common shares offering |  |  | (456)
Payments for repurchase of convertible notes |  |  | (19,667)
Proceeds from exercise of stock options | 769 | 879 | 707
Net cash provided by(used in) financing activities | (150,231) | (48,121) | (185,552)
Effect of exchange rate changes | (29,618) | 6,362 | (24,630)
Net increase (decrease) in cash, cash equivalents and restricted cash | (7,860) | (4,391) | (19,370)
Cash, cash equivalents and restricted cash at the beginning of the year | 16,957 | 21,348 | 40,718
Cash, cash equivalents and restricted cash at the end of the year | 9,097 | 16,957 | 21,348
Supplemental disclosure of cash flow information: |  |  |
Interest paid (net of amounts capitalized) | $ 10,154 | $ 18,375 | $ 29,288

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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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